DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerPrecaution
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR
BAG" and "SEAT BELT
PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and
"SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the
driver and fr ...
Vertical synchronizing (VP) signal circuit
Description
In composite image (AUX image, camera image), transmit the vertical
synchronizing (VP) signal and horizontal synchronizing (HP) signal from
display unit to AV control unit so as to synchronize the RGB images displayed
with AV control unit, such as the image quality adjusting menu, ...
Subwoofer
Description
The AV control unit sends audio signals to the subwoofer amp. The subwoofer
amp. amplifies the audio signals before sending them to the subwoofers using
the audio signal circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit, subwoofer amp. and subwoofer connec ...